(19)

(11)

EP 1 438 158 A1

(12)

(43) Date of publication: 21.07.2004 Bulletin 2004/30 (21) Application number: 01975764.0 (22) Date of filing: 21.09.2001

(51) International Patent Classification (IPC)7: B24B 31/116 (86) International application number: PCT/US2001/042242 (87) International publication number: WO 2003/035325 (01.05.2003 Gazette 2003/18)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (71) Applicant: EXTRUDE HONE CORPORATION IrwinPennsylvania 15642 (US)	(72) Inventor: WALCH, William, L. Greensburg, PA 15601 (US) (74) Representative: Rössler, Matthias  KNH Patentanwälte,Kahlhöfer Neumann Herzog Fiesser,Karlstrasse 76 40210 Düsseldorf 40210 Düsseldorf (DE)